Catalytic cracking slurry oil filtering device

Abstract

The utility model provides a catalytic cracking oil slurry filter device, including primary filtration mechanism, extrusion mechanism, repeated filtration mechanism, scraper mechanism and discharge mechanism, the extrusion mechanism includes box cover, electric push rod, extrusion frame, extrusion plate and second filter screen, the top end of box cover is fixedly connected to the outer wall of electric push rod, and the top end of box cover is fixedly connected to the outer wall of electric push rod. The output end of the electric push rod is fixedly connected to the top end of the extrusion frame, catalytic cracking oil needing to be filtered is guided into the filter box along the feeding pipe, a first motor is started to drive a transmission rod to rotate, and the transmission rod drives a first scraping plate to filter the catalytic cracking oil along a first filter screen; the collecting tank is arranged at the top end of the fixing frame, particles in the catalytic cracking oil can be collected, the electric push rod is started to push the extrusion frame and the second filter screen to move downwards, the catalytic cracking oil can be extruded and extruded and filtered, and the particles in the catalytic cracking oil can be rapidly extruded downwards.

Description

Technical Field

[0001] The utility model relates to catalytic cracking oil slurry, in particular to catalytic cracking oil slurry filtration, and belongs to the technical field of catalytic cracking oil slurry. Background Art

[0002] Catalytic cracking slurry is the residue discharged from the catalytic cracking unit of the refinery. Its nature is extremely unstable. It contains about 40% saturated hydrocarbons, 40% to 60% aromatics and polycyclic aromatic hydrocarbons, and 10% gums and asphaltenes. In addition, it also contains 1% catalytic dust, so it is called catalytic slurry. Catalytic slurry has high raw material and aromatic content, higher density, lower viscosity and higher aromatic content.

[0003] According to the description in a disclosed filtering and separating device for catalytic cracking oil slurry (authorization announcement number: CN210278807U), "a filtering and separating device for catalytic cracking oil slurry, including a drive box, a filter box and a slag box, the drive box is arranged at the upper end of the filter box, and the slag box is arranged at the lower end of the filter box; a threaded shaft is arranged inside the filter box, and a filter screen cleaning device and a filtering mechanism are installed on the threaded shaft from top to bottom, the threaded shaft is installed on a threaded shaft fixing frame, and the threaded shaft fixing frame is fixedly installed on the inner wall of the filter box, and the lower end of the filter box is connected to the slag box. The ultrasonic and filtering technologies are combined together, and the cavitation effect and mechanical action of the ultrasound are used to reduce the viscosity of the catalytic cracking oil slurry, shorten the operation time, and then the filtering mechanism is used to filter and purify the catalytic cracking oil slurry, thereby improving the purification effect of the catalytic oil slurry and saving costs."

[0004] The existing catalytic cracking oil slurry filtering device is difficult to ensure that the temperature of the raw oil slurry entering the filtering process is within an appropriate range. The fluidity of the raw oil slurry decreases when the temperature is low, which reduces the filtering efficiency of the filter screen on the raw oil slurry. The raw oil slurry with a low temperature is more likely to solidify and clog the filtering equipment. Therefore, a catalytic cracking oil slurry filtering device is proposed. Utility Model Content

[0005] In view of this, the utility model provides a catalytic cracking oil slurry filtering device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0006] The technical solution of the embodiment of the utility model is implemented as follows: a catalytic cracking oil slurry filtering device, including a primary filtering mechanism, a squeezing mechanism, a repeated filtering mechanism, a scraper mechanism and a discharging mechanism, the squeezing mechanism includes a box cover, an electric push rod, an squeezing frame, an squeezing plate and a second filter screen, the top end of the box cover is fixedly connected to the outer wall of the electric push rod, the output end of the electric push rod is fixedly connected to the top end of the squeezing frame, the bottom end of the squeezing frame is fixedly connected to the outer wall of the squeezing plate by bolts, and a second filter screen is arranged between the squeezing plate and the squeezing frame;

[0007] The scraper mechanism includes a first motor, a transmission rod, a first scraper and a second scraper, the output end of the first motor is fixedly connected to the top end of the transmission rod, the middle part of the transmission rod is fixedly connected to the middle of the second scraper, and the bottom end of the transmission rod is fixedly connected to the middle part of the second scraper.

[0008] Further preferably, the primary filtering mechanism includes a filter box, a feed pipe, a limiting base, a collecting tank, a first filter screen and a fixing frame, the interior of the filter box is fixedly connected to the outer wall of the limiting base, a fixing frame is installed on the top of the limiting base, the interior of the fixing frame is fixedly connected to the first filter screen, and a collecting tank is opened on the outer side of the top of the fixing frame.

[0009] Further preferably, a feed pipe is connected through the outer wall of the filter box, and the outer wall of the first filter screen is tightly fitted to the bottom end of the first scraper.

[0010] Further preferably, the repeated filtering mechanism includes a discharge hopper, an extrusion plate, a third filter screen, a feed port, a collecting bucket and a discharge pipe, the inner top end of the discharge hopper is fixedly connected to the bottom end of the extrusion plate by bolts, a third filter screen is arranged between the bottom end of the extrusion plate and the discharge hopper, the bottom end of the third filter screen is fixedly connected to the collecting bucket, and the bottom end of the discharge hopper is through-connected to the top end of the discharge pipe.

[0011] Further preferably, a plurality of feed ports are provided on the outer wall of the extrusion disk, the top end of the extrusion disk is slidably connected to the bottom end of the second scraper, and the outer wall of the discharge hopper is fixedly connected to the support frame.

[0012] Further preferably, the discharging mechanism includes a second motor and a screw rod, the output end of the second motor is fixedly connected to the bottom end of the screw rod, and the outer wall of the screw rod is rotatably connected to the inside of the discharging pipe.

[0013] Further preferably, the top end of the discharge hopper is fixedly connected to the bottom end of the filter box by bolts, the top end of the filter box is threadedly connected to the bottom end of the box cover, and the top end of the box cover is fixedly connected to the bottom end of the first motor.

[0014] Further preferably, the third filter screen and the extrusion disk are respectively configured to be funnel-shaped.

[0015] The utility model embodiment adopts the above technical solution, which has the following advantages:

[0016] 1. The catalytic cracking oil to be filtered is introduced into the filter box along the feed pipe, and the first motor is started to drive the transmission rod to rotate, and the transmission rod drives the first scraper to filter the catalytic cracking oil along the first filter. Since the catalytic cracking oil flows slowly in a low temperature environment, the time for the catalytic cracking oil to automatically pass through the first filter is relatively long. The first scraper improves the filtering efficiency. A collection tank is provided at the top of the fixed frame to collect particles inside the catalytic cracking oil. The electric push rod is started to push the extrusion frame and the second filter to move downward, so that the catalytic cracking oil can be squeezed and filtered, so that the particles inside the catalytic cracking oil can be squeezed downward quickly, and the catalytic cracking oil is prevented from accumulating inside the filter box, resulting in slow filtering.

[0017] 2. When the catalytic cracking oil falls off the top of the extrusion plate after preliminary filtration, the catalytic cracking oil is introduced into the third filter screen for filtration through the second scraper. By setting the first scraper and the second scraper, the catalytic cracking oil can be scraped off from the inside of the filter device. By starting the second motor to drive the screw rod to rotate, it is convenient to discharge the catalytic cracking oil accumulated in the discharge pipe.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural diagram of the entire utility model;

[0021] Figure 2 This is the overall cross-sectional structural diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the primary filtering mechanism of the utility model;

[0023] Figure 4 This is a transmission schematic diagram of the utility model;

[0024] Figure 5 For this utility model Figure 2 A partial enlarged schematic diagram in the middle.

[0025] Figure numerals: 1. primary filtering mechanism; 101. filter box; 102. feed pipe; 103. limit base; 104. collecting trough; 105. first filter; 106. fixing frame; 2. extrusion mechanism; 201. box cover; 202. electric push rod; 203. extrusion frame; 204. extrusion plate; 205. second filter; 3. repeated filtering mechanism; 301. discharge hopper; 302. extrusion plate; 303. third filter; 304. feed port; 305. collecting barrel; 306. discharge pipe; 307. supporting frame; 4. scraper mechanism; 401. first motor; 402. transmission rod; 403. first scraper; 404. second scraper; 5. discharge mechanism; 501. second motor; 502. screw rod. DETAILED DESCRIPTION

[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0027] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0028] Example

[0029] like Figure 1-Figure 5 As shown, the embodiment of the utility model provides a catalytic cracking oil slurry filtering device, including a primary filtering mechanism 1, an extrusion mechanism 2, a repeated filtering mechanism 3, a scraper mechanism 4 and a discharging mechanism 5, wherein the extrusion mechanism 2 includes a box cover 201, an electric push rod 202, an extrusion frame 203, an extrusion plate 204 and a second filter 205, wherein the top end of the box cover 201 is fixedly connected to the outer wall of the electric push rod 202, the output end of the electric push rod 202 is fixedly connected to the top end of the extrusion frame 203, the bottom end of the extrusion frame 203 is fixedly connected to the outer wall of the extrusion plate 204 by bolts, and a second filter 205 is arranged between the extrusion plate 204 and the extrusion frame 203, and the catalytic cracking oil can be extruded and filtered by starting the electric push rod 202 to push the extrusion frame 203 and the second filter 205 downward, so that the particles inside the catalytic cracking oil can be quickly extruded downward, thereby preventing the catalytic cracking oil from accumulating inside the filter box 101, resulting in slow filtration;

[0030] The scraper mechanism 4 includes a first motor 401, a transmission rod 402, a first scraper 403 and a second scraper 404, wherein the output end of the first motor 401 is fixedly connected to the top of the transmission rod 402, the middle of the transmission rod 402 is fixedly connected to the middle of the second scraper 404, and the bottom end of the transmission rod 402 is fixedly connected to the middle of the second scraper 404, and the first motor 401 is started to drive the transmission rod 402 to rotate, and the transmission rod 402 drives the first scraper 403 to filter the catalytic cracking oil along the first filter 105.

[0031] In one embodiment, specifically, the primary filtering mechanism 1 includes a filter box 101, a feed pipe 102, a limiting base 103, a collecting tank 104, a first filter screen 105 and a fixing frame 106. The interior of the filter box 101 is fixedly connected to the outer wall of the limiting base 103. A fixing frame 106 is installed on the top of the limiting base 103. The interior of the fixing frame 106 is fixedly connected to the first filter screen 105. A collecting tank 104 is provided on the outer side of the top of the fixing frame 106. By providing the collecting tank 104 at the top of the fixing frame 106, particles inside the catalytic cracking oil can be collected.

[0032] In one embodiment, specifically, the outer wall of the filter box 101 is connected with a feed pipe 102 , and the outer wall of the first filter screen 105 is tightly fitted to the bottom end of the first scraper 403 .

[0033] In one embodiment, specifically, the repeated filtering mechanism 3 includes a discharge hopper 301, an extrusion plate 302, a third filter screen 303, a feed port 304, a collecting barrel 305 and a discharge pipe 306. The inner top of the discharge hopper 301 is fixedly connected to the bottom end of the extrusion plate 302 by bolts, and a third filter screen 303 is arranged between the bottom end of the extrusion plate 302 and the discharge hopper 301. The bottom end of the third filter screen 303 is fixedly connected to the collecting barrel 305, and the bottom end of the discharge hopper 301 is through-connected to the top end of the discharge pipe 306. The catalytic cracking oil is introduced into the third filter screen 303 for filtration through the second scraper 404. By setting the first scraper 403 and the second scraper 404, the catalytic cracking oil can be scraped off from the inside of the filtering device.

[0034] In one embodiment, specifically, a plurality of feed ports 304 are provided on the outer wall of the extrusion disk 302 , the top end of the extrusion disk 302 is slidably connected to the bottom end of the second scraper 404 , and the outer wall of the discharge hopper 301 is fixedly connected to the support frame 307 .

[0035] In one embodiment, specifically, the discharging mechanism 5 includes a second motor 501 and a screw rod 502 , the output end of the second motor 501 is fixedly connected to the bottom end of the screw rod 502 , and the outer wall of the screw rod 502 is rotatably connected to the inside of the discharging pipe 306 .

[0036] In one embodiment, specifically, the top of the discharge hopper 301 is fixedly connected to the bottom of the filter box 101 by bolts, the top of the filter box 101 is threadedly connected to the bottom of the box cover 201, and the top of the box cover 201 is fixedly connected to the bottom of the first motor 401.

[0037] In one embodiment, specifically, the third filter screen 303 and the squeezing disc 302 are respectively configured to be funnel-shaped, so as to facilitate the particles to flow into the interior of the collection barrel 305 .

[0038] When the utility model is working, the catalytic cracking oil to be filtered is introduced into the filter box 101 along the feed pipe 102, and the first motor 401 is started to drive the transmission rod 402 to rotate, and the transmission rod 402 drives the first scraper 403 to filter the catalytic cracking oil along the first filter screen 105. Because the catalytic cracking oil flows slowly under low temperature environment, the time for the catalytic cracking oil to automatically pass through the first filter screen 105 is longer. Through the action of the first scraper 403, the filtering efficiency is improved. By arranging a collection tank 104 at the top of the fixed frame 106, particles inside the catalytic cracking oil can be collected. By starting the electric push rod 202 to push the extrusion frame 203 The second filter screen 205 moves downward, and the catalytic cracking oil can be squeezed and filtered, so that the particles inside the catalytic cracking oil can be squeezed downward quickly, avoiding the catalytic cracking oil from accumulating inside the filter box 101, resulting in slow filtration. After the initial filtration, the catalytic cracking oil falls on the top of the extrusion disk 302, and the catalytic cracking oil is introduced into the third filter screen 303 for filtration through the second scraper 404. By setting the first scraper 403 and the second scraper 404, the catalytic cracking oil can be scraped off from the inside of the filter device, and by starting the second motor 501 to drive the screw rod 502 to rotate, it is convenient to discharge the catalytic cracking oil accumulated in the discharge pipe 306.

[0039] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A catalytic cracking oil slurry filtering device, comprising a primary filtering mechanism (1), a squeezing mechanism (2), a repeated filtering mechanism (3), a scraper mechanism (4) and a discharging mechanism (5), characterized in that: The extrusion mechanism (2) comprises a box cover (201), an electric push rod (202), an extrusion frame (203), an extrusion plate (204) and a second filter (205); the top end of the box cover (201) is fixedly connected to the outer wall of the electric push rod (202); the output end of the electric push rod (202) is fixedly connected to the top end of the extrusion frame (203); the bottom end of the extrusion frame (203) is fixedly connected to the outer wall of the extrusion plate (204) by bolts; and a second filter (205) is provided between the extrusion plate (204) and the extrusion frame (203); The scraper mechanism (4) comprises a first motor (401), a transmission rod (402), a first scraper (403) and a second scraper (404); the output end of the first motor (401) is fixedly connected to the top end of the transmission rod (402), the middle part of the transmission rod (402) is fixedly connected to the middle of the second scraper (404), and the bottom end of the transmission rod (402) is fixedly connected to the middle part of the second scraper (404).

2. A catalytic cracking oil slurry filtering device according to claim 1, characterized in that: The primary filtering mechanism (1) comprises a filter box (101), a feed pipe (102), a position limiting base (103), a collecting tank (104), a first filter screen (105) and a fixing frame (106); the interior of the filter box (101) is fixedly connected to the outer wall of the position limiting base (103); the fixing frame (106) is installed on the top of the position limiting base (103); the interior of the fixing frame (106) is fixedly connected to the first filter screen (105); and the collecting tank (104) is provided on the outer side of the top of the fixing frame (106).

3. A catalytic cracking oil slurry filtering device according to claim 2, characterized in that: The outer wall of the filter box (101) is connected through a feed pipe (102), and the outer wall of the first filter screen (105) is tightly fitted to the bottom end of the first scraper (403).

4. A catalytic cracking oil slurry filtering device according to claim 1, characterized in that: The repeated filtering mechanism (3) comprises a discharge hopper (301), an extrusion plate (302), a third filter screen (303), a feed port (304), a collecting bucket (305) and a discharge pipe (306); the inner top end of the discharge hopper (301) is fixedly connected to the bottom end of the extrusion plate (302) by means of bolts; a third filter screen (303) is arranged between the bottom end of the extrusion plate (302) and the discharge hopper (301); the bottom end of the third filter screen (303) is fixedly connected to the collecting bucket (305); and the bottom end of the discharge hopper (301) is through-connected to the top end of the discharge pipe (306).

5. A catalytic cracking oil slurry filtering device according to claim 4, characterized in that: The outer wall of the extrusion plate (302) is provided with a plurality of feed ports (304); the top end of the extrusion plate (302) is slidably connected to the bottom end of the second scraper (404); and the outer wall of the discharge hopper (301) is fixedly connected to the support frame (307).

6. A catalytic cracking oil slurry filtering device according to claim 1, characterized in that: The discharging mechanism (5) comprises a second motor (501) and a screw rod (502), wherein the output end of the second motor (501) is fixedly connected to the bottom end of the screw rod (502), and the outer wall of the screw rod (502) is rotatably connected to the inside of the discharging pipe (306).

7. A catalytic cracking oil slurry filtering device according to claim 4, characterized in that: The top end of the discharge hopper (301) is fixedly connected to the bottom end of the filter box (101) by means of bolts, the top end of the filter box (101) is threadedly connected to the bottom end of the box cover (201), and the top end of the box cover (201) is fixedly connected to the bottom end of the first motor (401).

8. A catalytic cracking oil slurry filtering device according to claim 4, characterized in that: The third filter screen (303) and the squeezing plate (302) are respectively configured to be funnel-shaped.

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